Insulator-clamp.



PATENTED FEB. 5, 1907 W. G. CLARK. INSULATOR CLAMP.

APPLIOATXON FILED JUNE 12. 1905.

2 SHEETS-SHEET l.

inventor:

Atty,

PATENTED FEB? 6, 1907.

W. G. CLARK.

INSULATOR CLAMP.

APPLICATION TILED JUNE 12. 190a.

2 SHEBTSSHEET 2.

Inventor: WA urea G CLAR K Atty qlllll {a z f of the two portions of the clamp arranged to 4 view of the clamp-holding'wire in position in I the following is a specification accompanied vices and prevent the strain on the wire from form of insulator-clamp.

WALTER'G. CLARK, OF SEATTLE, WASHINGTON, ASSIGNOR TO THE CLARK ELECTRIC AND. MANUFACTURING YORK.

Specification of Letters Patent.

COMPANY, A CORPORATION OF NEW INSULATOR-CLAMP.

Patented Feb. 5, 1 907.

Application filed June 12,1905. Serial No. 264,816.

To all whom it may concern:

Be it known that I, WALTER G. CLARK, a citizen of the United States, and a resident of Seattle, county of King, State of Washington, have invented certain new and useful Improvements in Insulator-Clamps, of which by drawings.

This invention relates to insulator-clamps for clamping electric wires, more particularly high-tension cables to insulators and the objects of the invention are to improve upon the construction and efficiency of such debeing thrown entirely upon the clamp.

Further objects of the invention win hereinafter appear; and to these ends the invention. consists of a device for carrying out the above objects, embodying the features oi construction, combinations of elements, and arrangement of parts havin the "eneral mode of operation substantially as hereinafter fully described and claimed in this speciiication and shown in the accompanying drawings, in which Figure 1 is a top plan View of an insulator and clamp embodying the invention. Fig. 2 is a side elevation of the same. Fig. 3 is a perspective view of one portion of the clamp. F ig. 4 is a perspective view of the cooperating portion thereof. Fig. 5 is a perspective view clamp the wire, illustrating in what manner the two portions cooperate and interlock. Fig. 6 is a transverse sectional elevation of the insulator and clamp on the line :0 9c of F ig. 1, showing the clam. 1n position in the insu lator. Fig. 7 is a si( e elevation of a modified Fig. 8 is a top plan view of the same. Fig. 9 is a perspective view of one of the duplicate cooperating portions ofthe clamp, and Fig. 10 is a detail the insulator.

Referring to the drawings, represents a suitable insulator provided with a cap B, which may be in one or more portions, in this instance the two parts, the body and cap, being made all in one solid piece. The cap is provided with a groove D to receive the wire E. Means are provided for clamping the wire tightly and for preventing it from movsulator.

both portions of the clam can be applied to the insulator-cap from t e outside ecause the roove Dis widened at each side at F, whidli enables the two parts G and H of the clamp to be applied to the wire directly.

The two portions G and H of the clamp are adapted to interlock, and thus cooperate to clasp the wire. G, is provided with a screw-threaded tongue or projection I, with which an aperture or One portion, as the portion slot J on the other portion H cooperates. I

One member, as the member H, is rovided with one or more tongues or lugs which enter and interlock'with the slots or apertures L in the member G. Preferably the member G has a curved base or bottom 0, which substantially fits the curved bottom of the insulator-aperture, which is recessed deeply enough to receive the member G and bring the inner surface Q of said member substantially flush with the bottom of the groove D, so that the wire E will lie in the groove and in the curved bottom portion Q of the clamping member G.

The clamping member H is provided with a curved body R, which is eoncaved to receive the wire E and cooperate with the member G. In this instance the member G is provided with an upwanlly-extending portion S, opposite the screw-threaded projection I, to provide the slots L for the lugs K on the member II.

In Fig. 5 a perspective view is shown illustrating in what manner the clamping members G and H interlock, from which it will be seen that the lugs K are of sufiicient length to project beyond the slots L, thus affording means for locking the entire clam in the in The projections T of t 0 member ll also extend beyond the upright I and afford means for securing the clamp in position in the insulator.

In order to clamp the wire in position, the

I in the cap insulator. The more inserted in the gromre and placed upon the cugved portion l of the member if, and theclumpmg memo 1' ii is then placedover the i i "s end the member G, as indiw" ich cas lugs K i t into the recess U hens: u too projecting 'oo ions V oft/he insulat u-cap, and thus oreve .t t. .clu .vitlidrown upw out of is screwed. down upon the screw-ti Leiided projection I to secure the two i. vmping members together, i t f be seen ti itthe progections T are seated below the "top of the cup, :1. d thus aid securely l'iolding the wire in position. The widened portion of the slot or groove in the lIlSlliQtOT-lZfl-P is constructed the same on both sides, so ti the clamp may he i nscrted in either position that is to it may be insorted in the position shown. in F 6, or else no screw-threaded upright and nut may be on the left-hand side as Fig. 5 is viewed instead. of on the right-hand side. The clamp and cooperating grooved portion of the cap are preferably so constructed that the projections K bear against the projections V on the cap when. the clun'ip tightened, thereliv holding the .virc firmly in position.

in the modified form of clamp shown in Figs. 7, 8, 9, and 10 the insulator and cap are illust' 'atcd in the same general relation as before, and in this instance the cap is divided into tivo port ions A and A suitably secured bythe screws (3 to the body of the insulator. The groove l.) widened at F" each side at the center oi the cap and is undercut at l at the sides 1nd ends to receive the body portions B of the clamping members G, which are sul'istsntial dupl' :atcs of each other and adapted to cooperate one with the other, as indicated in plan view of Fig. 8. in this instance the clan'iping incn'ibers are so constructed that the clamp containing the wire is first placed in position in the widened poi tion of the groove in one half A of the cop and then the other half of the cap A isplaced in position on the insulator-body,, thereby preventing the clamp. and wire from being removed until one portion of the cap is first removed. In this instance the clamps G andl l' comprise the hollowed or grooved body ortions having tho projections l3 and provided with the screw-threaded necks J, which are provided with interlocking faces K, in this instance the faces being shown formed with compound curves. The nut l/ suit-ably locks the two cooperating members G and H togetl'icr. According to the construction of this invention the strain on the Wire is taken by both the clamp and tho insulator itself, and the chunps are (.ODSl'lHCiOd in such a, substantial manner that they firmly hold the wire in place without liability oi i i 2,: ved in the widened poro1 easing.

The members of the-clamps not onlv into ock with each other, but it will be soon that they also interlock with the insulator-cap to prevent either the clamp or wire from being removed om the insulator without' first either removing a portion of the insulator or unlocking the clamping members. Obviously some Features of this invention may be used without others and the invcntion may be embodied in widely-v:ny1ng forms.

Therefore,without limiting the invention to the devices shown and described and with out cnun'icrating cquivalenlsl claim, and dcsire to obtain bv'lletters Patent, the following:

' l. The combination with an insulator provided with a transverse gromrc and conduct.- ing-wire therein, of a clamp adapted to be secured in said groove and comprising coopcrating members interlocking one with the other and adapted to hold the wire in tho groove in the insulator.

2. The combination with an insulator of a. conductinguvire and a clamp for said wire, con'iprising coi'iperating interlocking members interlocked. with the insulator in the groove.

3. The combination with a transverselygroovcd. insulator, of a clamp for locking the wire in said groove, said clamp comprising cooperating members having curved portions adapted to clasp the wire, and mucous for locking the members to each other and to the insulator. I

4. The combination with an insulator provided with a re of an insulator-clamp comprising a pin ahty of members adapted to interlock one "ith the other, said mcmhers bcingprovitled with projections which engage said recess so that when one n'iembcr is interlocked with tllie other the clamp cannot be removed fron the insulator.

5. The combination with ,a grooved insulator provided with av recess, of an insulatm clamp f or clamping the wire comprising intcrlocking mcmbcrs, sail] members being provided. with projections which engage said recess so that when said members are placed in the groove of the insulator and interlocked onewith the other, the projections in said recess prevent the clamp from being removed without unlocking the members.

' 6. The combination of an insulator having a groove provided with a widened portion and interlocking members adapted to engage said widened portion and clamp aconductor in the groove.

7. The combination of an insulator having a groove provided with a widened portion, intmlocking members adapted to engage said widened portion, and means for securing said interlocking members in said groove.

8. The comb nation with a grooved. insulLO hmgr and conducting-wire, 0f a clamp adaptspecification in the presence of two subscribed to be secured in said gl'oove and comprising Witnesses. 'y i ing (ioiiperating members interlocking one with the other and with the insuiatcir and 5 adapted (oh 01d the Wire in the groove in the insulator.

.lnv tvstinmny whereof I. have signed this WALTER G. CLARK.

Witnesses:

JAMES J MOUAFFERTY, LEONORA SEATON. 

